What am I doing wrong in the 300M hurdles?

Okay, so I can get over the first 2 hurdles perfect without any doubt. But after that I somehow get into this thing where I begin to studder step. I don't know how it happens, obviously I'm too close but how can I improve that? I'm running 46's right now and I know if I can get over all hurdles perfectly I will run faster times. Help please!|||you have to get use to going over the hurldes with both legs... dont over think it when you are running just go with the leg that is there at that time|||Well are you taking three steps before each hurdle? Also just don't think about your psyching yourself out.